3M 3408-6303 Rectangular Connector Header - Equivalent & Substitute Parts

Part Overview

The 3M 3408-6303 is a through-hole rectangular connector header with 16 positions arranged in 2 rows at 0.100" (2.54mm) pitch. This component features shrouded 4-wall construction with solder termination and latch lock/eject hook fastening. The part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement.

Key Parameters

Parameter	Value
Connector Type	Header
Contact Type	Male Pin
Number of Positions	16
Number of Rows	2
Pitch - Mating	0.100" (2.54mm)
Row Spacing - Mating	0.100" (2.54mm)
Mounting Type	Through Hole
Termination	Solder
Shrouding	Shrouded - 4 Wall
Operating Temperature Range	-55°C ~ 105°C
Current Rating	1A
Material Flammability Rating	UL94 V-0

Substitute Part Grouping Explanation

Substitution for the 3M 3408-6303 is determined by strict alignment of the following parameters:

Connector type (Header)
Contact type (Male Pin)
Position count (16 positions)
Row configuration (2 rows)
Mating pitch (0.100" / 2.54mm)
Row spacing (0.100" / 2.54mm)
Mounting method (Through Hole)
Termination type (Solder)
Shrouding configuration (Shrouded - 4 Wall)
Operating temperature range (-55°C ~ 105°C minimum)
Flammability rating (UL94 V-0)

Substitute parts are grouped into two categories: direct functional equivalents from 3M (D3000 and 3000 series) and cross-manufacturer alternatives from TE Connectivity and Amphenol ICC that maintain identical mating and mechanical specifications.

Parameter Comparison

Part Number	Manufacturer	Series	Status	Positions	Pitch	Fastening Type	Current Rating	Operating Temp	RoHS Status
3408-6303	3M	3000	Obsolete	16 (2x)	0.100"	Latch Lock/Eject Hooks, Long	1A	-55°C ~ 105°C	Non-compliant
D3408-6002-AR	3M	D3000	Active	16 (2x)	0.100"	Push-Pull	1.75A	-55°C ~ 105°C	ROHS3 Compliant
N3408-6002RB	3M	3000	Active	16 (2x)	0.100"	Push-Pull	1.75A	-55°C ~ 105°C	RoHS Compliant
102321-3	TE Connectivity AMP Connectors	AMP-Latch	Active	16 (2x)	0.100"	Latch Lock/Eject Hooks, Long	1A	-65°C ~ 105°C	Non-compliant
2-5499206-3	TE Connectivity AMP Connectors	AMP-Latch	Active	16 (2x)	0.100"	Latch Lock/Eject Hooks, Long	1A	-65°C ~ 105°C	ROHS3 Compliant
499206-3	TE Connectivity AMP Connectors	AMP-Latch	Active	16 (2x)	0.100"	Latch Lock/Eject Hooks, Long	1A	-65°C ~ 105°C	Non-compliant
499922-3	TE Connectivity AMP Connectors	AMP-Latch	Active	16 (2x)	0.100"	Latch Lock/Eject Hooks, Long	1A	-65°C ~ 105°C	Not applicable
53611-G16-4LF	Amphenol ICC (FCI)	Quickie™	Active	16 (2x)	0.100"	Latch Lock/Eject Hooks	Not specified	Not specified	RoHS Compliant
53611-S16-4LF	Amphenol ICC (FCI)	Quickie™	Active	16 (2x)	0.100"	Latch Lock/Eject Hooks	Not specified	Not specified	RoHS Compliant
5499206-3	TE Connectivity AMP Connectors	AMP-Latch	Active	16 (2x)	0.100"	Latch Lock/Eject Hooks, Long	1A	-65°C ~ 105°C	RoHS Compliant
5499922-3	TE Connectivity AMP Connectors	AMP-Latch	Active	16 (2x)	0.100"	Latch Lock/Eject Hooks, Long	1A	-65°C ~ 105°C	RoHS Compliant

Engineering Selection Recommendations

For new designs, select from active product status parts with current compliance certifications. The 3M D3408-6002-AR and N3408-6002RB offer direct 3M lineage with improved current ratings (1.75A) and RoHS compliance. These parts use push-pull fastening instead of latch lock mechanisms, which may require design accommodation.

For designs requiring latch lock/eject hook fastening identical to the original 3408-6303, TE Connectivity AMP-Latch series parts (102321-3, 2-5499206-3, 5499206-3, 5499922-3) provide functional equivalence with active status. Among these, 2-5499206-3 and 5499206-3 carry ROHS3 compliance. The TE Connectivity parts extend the operating temperature range to -65°C, providing additional margin.

Amphenol ICC Quickie™ series (53611-G16-4LF, 53611-S16-4LF) are RoHS compliant alternatives with active status. Operating temperature and current rating specifications are not provided for these parts, requiring confirmation before selection for temperature-critical applications.

Frequently Asked Questions (FAQ)

Q: Can I substitute the 3M 3408-6303 with the D3408-6002-AR?

A: Yes, functionally. Both are 16-position, 2-row, 0.100" pitch shrouded headers with through-hole solder termination and identical operating temperature range. The D3408-6002-AR uses push-pull fastening instead of latch lock hooks and provides higher current rating (1.75A vs 1A). Verify mechanical clearance for the fastening mechanism change.

Q: What is the difference between TE Connectivity 102321-3 and 2-5499206-3?

A: Both are AMP-Latch series 16-position headers with latch lock/eject hook fastening and identical mating specifications. The 2-5499206-3 carries ROHS3 compliance while 102321-3 is RoHS non-compliant. The 2-5499206-3 has insulation color blue versus black for 102321-3. Both support -65°C to 105°C operating range.

Q: Are the Amphenol ICC Quickie™ parts direct replacements?

A: The 53611-G16-4LF and 53611-S16-4LF maintain identical mating pitch, position count, row configuration, and shrouding. Operating temperature and current rating data are not provided for these parts. Confirm thermal and electrical requirements before substitution.

Q: Which substitute part has the best compliance status?

A: The 3M D3408-6002-AR, 3M N3408-6002RB, TE Connectivity 2-5499206-3, TE Connectivity 5499206-3, TE Connectivity 5499922-3, Amphenol ICC 53611-G16-4LF, and Amphenol ICC 53611-S16-4LF all carry current RoHS compliance. The 3M parts (D3408-6002-AR, N3408-6002RB) and TE Connectivity 2-5499206-3 carry ROHS3 designation.

Q: Does packaging affect substitution?

A: Packaging (Tray, Bulk) does not affect electrical or mechanical compatibility. Select based on procurement and inventory requirements. All listed substitutes are available in tray or bulk packaging.

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